[C320-list] Fuel Return Line Check Valve

[Karl Mielenhausen _/)]

Members,

When in doubt, check our association website....

Reference Material / Manuals and Technical Info / Engine

2nd page in, you'll find the Yanmar Service Bulletin on Hard Starting...
http://www.catalina320.com/filemgmt_data/files/Hard_Start_Yanmar.pdf

Could have also found it by searching "hard start".

Karl Mielenhausen

  On Sat, 19 Jun 2010 12:31:32 -0300, Robert E. Sloat <resloat at comcast.net>  
wrote:

> There was detailed explanation of the problems with a faulty check valve  
> in the fuel return line for Yammar 3GM30F a few years ago by Jeff Church  
> who has graduated to a C38.5.  I believe it had to do with hard  
> starting.  I could not find it in the C320 website or in my data base.   
> A few articles turned up in a Google search:  yanmar engine fuel return  
> line check valve. Torrenson has something on this issue.
>
>
> Bob Sloat
> Savannah Hull 894
> ----- Original Message ----- From: <bruceheyman at cox.net>
> To: "Catalina List" <C320-List at Catalina320.com>
> Sent: Saturday, June 19, 2010 9:33 AM
> Subject: Re: [C320-list] Fuel Filter
>
>
>> Chris,
>> First I've heard of this but it would explain why the boat can be hard  
>> to keep running when we first start it up after a month of not using  
>> it.  Why are you recommending removing it verses repairing it?
>> Thanks,
>> Bruce
>> Somerset 671 SoCal
>> Sent via BlackBerry by AT&T
>>
>> -----Original Message-----
>> From: Chris Burti <clburti at gmail.com>
>> Date: Fri, 18 Jun 2010 16:27:54
>> To: <C320-List at catalina320.com>
>> Subject: Re: [C320-list] Fuel Filter
>>
>> Changing the fuel filter is a good idea.
>>
>> There is also a recurring problem with the fuel systems in our  
>> generation of
>> boats. There is a check valve in the fuel return to the tank. If and  
>> when
>> this valve fails, it permits air to work back up the return to the
>> injectors. The check valve should be removed. Until it is, you can run  
>> a few
>> strokes on the lift pump in the Racor filter separator and it will  
>> solve the
>> problem until the engine goes without for a few weeks.
>>
>> On Fri, Jun 18, 2010 at 2:09 PM, Joseph Aberdale  
>> <summerwind3 at comcast.net>wrote:
>>
>>> My Yanmar engine 3GM30F in my 2002 Catalina died while underway.  I'm  
>>> going
>>> to change the fuel filter to determine if that's the problem. Is there  
>>> a
>>> fuel shut off valve I need to close before changing the filter and  
>>> where is
>>> it located?  How does the filter housing come apart to change the  
>>> filter?
>>>
>>> Thanks very much in advance for your help. It's appreciated.
>>>
>>> Joe
>>>
>>> #908
>>>
>>
>>
>>
>> -- Chris Burti Farmville, NC
>>
>


-- 
Karl Mielenhausen
Catalina 320 Hull 690